The network promises past clients (from all five seasons) will return to dish on relationships and someone will have a special surprise. The reunion will be a two part special with part I airing tonight at 9:00 p.m., ET/PT and part II airing next Tuesday, December 6th At 9 pm ET/PT.

The press release states “Andy Cohen sits down with Patti for the first-ever reunion special. Visited by some of Patti’s most memorable clients, including Hello Kitty fanatic Robin Kassner, who offered to buy her date a Maserati; Stacy Kessler, who Patti accused of having a mid-life crisis; Zagros Bigvand, who didn’t follow Patti’s rule of “no sex before monogamy;” retired NFL star turned ESPN-commentatorMarcellus Wiley, “Million Dollar Listing” star Madison Hildebrand, and more.”

A bit surprising because ratings for the show have taken a dip this year, but by having on the craziest guests from all five seasons, it will definitely make for a must-see reunion!

The reunion part I airs tonight (9/8c). A preview clip featuring the infamousShaunaRaisch is below!